#! /usr/bin/env python
# -*- coding: utf-8 -*-

import matplotlib.pyplot as plt

fig = plt.figure('subplot demo')  # 图像标题为'subplot demo'，否则默认为'Figure 1'

# 接下来是在一个3行*2列的网格里添加子图
# row = 3, col = 2,该网格可以摆放六张子图index total为6
# fig.add_subplot(221)          # row = 3, col = 2, index = 1
# equivalent but more general【与上面一行等价，但是这种更普遍】
ax1 = fig.add_subplot(3, 2, 1)  # row = 3, col = 2, index = 1

# add a subplot with no frame
ax2 = fig.add_subplot(322, frameon=False)  # row = 3, col = 2, index = 2

# add a polar subplot
fig.add_subplot(323, projection='polar')  # row = 3, col = 2, index = 3

# add a red subplot that share the x-axis with ax1
fig.add_subplot(324, sharex=ax1, facecolor='red')  # row = 3, col = 2, index = 4

# add a polar subplot
fig.add_subplot(325, projection='lambert')  # row = 3, col = 2, index = 5

# add a red subplot, mollweide 即是椭圆ellipse
fig.add_subplot(326, projection='mollweide')  # row = 3, col = 2, index = 6

# delete ax2 from the figure 删除子图
fig.delaxes(ax2)
#
# # add ax2 to the figure again 再次添加子图
fig.add_subplot(ax2)

plt.show()  # 显示图像